350-401 Question #925: Real Exam Question with Answer & Explanation

Question

Refer to the exhibit. How should the programmer access the list of VLANs that were received via the API call?

Options

• AVlanNames['response']
• BVlanNames[0]
• CVlanNames['Vlan1']
• Dlist(VlanNames)

Explanation

Explanation

Option A (VlanNames['response']) is correct because Cisco DNA Center (and similar REST APIs) typically return JSON data wrapped in a dictionary structure where the actual content is nested under a key called 'response'. When you make an API call and store the result, the data is not stored directly at the top level - you must access the 'response' key to retrieve the list of VLANs.

Option B (VlanNames[0]) is wrong because using an integer index assumes VlanNames is a plain list, but it is actually a dictionary, so using [0] would raise a KeyError. Option C (VlanNames['Vlan1']) is incorrect because 'Vlan1' is a value within the response, not a top-level key of the returned dictionary. Option D (list(VlanNames)) simply converts the dictionary's keys into a list, which would return something like ['response'], not the actual VLAN data.

Memory Tip: Think of API responses like a wrapped gift 🎁 - the outer box is the dictionary, and you must open it with the 'response' key to get to the actual data inside. Whenever you see a Cisco API call result, always look for ['response'] first.

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